Nuts — pistachios, walnuts, almonds and all their tasty cousins — add flavor, texture and nutrition to main dishes. Send us your recipes using nuts for the Recipe Box of March 7. You can post recipes on the Recipe Box blog at http:/blog.timesunion.com/recipebox or mail them to Recipe Box, Times Union, Box 15000, Albany, NY 12211. You might just win a cookbook for your efforts. Please include your name, address, phone number and number of servings. (And please spell out measurements: teaspoon, tablespoon, cups, etc. It's our style.) Remember pork recipes for Feb. 28. And it's not too early to think about celebrating St. Patrick's Day with green food recipes for March 14.